In WFNS grade 1 the GCS is 15 and there is no motor deficit. In grade 2, there is a slight reduction in GCS to 14–13 but no motor deficit. In grade 3, the GCS is also 14–13 but there exists a motor deficit. In grades 4 and 5, there may, or may not be a motor deficit, but GCS is reduced from 12 to 7 in grade 4 and as low as 3–6 in grade 5 (Table 1).